METHOD OF OPTICAL LOCATION RANGE FINDING Russian patent published in 2009 - IPC G01C3/08 G01S17/88 

FIELD: instrument engineering.

SUBSTANCE: invention deals with laser pulse location range finding. Method of optical location distance measuring up to the target by way of incoherent concentration includes series of cycles. Each cycle consists of sending of laser sounding pulse to the target. Time is sampled by displacement units. Pulse reflected by the target is received. In each time sample there developed is hypothesis about signal presence or absence by way of threshold conversion of received mixture of noise and signal. The number that corresponds to hypothesis is formed and these numbers are accumulated in a form of summaries for each time sample. After series of cycles time samples the accumulated summary of which exceeds specified number are marked. These accumulated summaries help to form ranging evaluation up to the target. Note that calibration is performed beforehand.

EFFECT: increase of range finding accuracy in wide range of received signals swing.

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